Homemade cakes with cherry/apricot jam 300g

What Grandma says: A secret that I share with you with love, is that I usually sprinkle over the appropriately thick layer of apricot or sour-cherry jam some sweet coke, which will roast in the oven and become crispy. With the soft and fluffy cake, the jam cakes are so good that, even the lightest fingers that know how to keep a cake without getting too dirty still become irresistibly delicious!